PSI- Issue 9

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Liviu Marsavina et al. / Procedia Structural Integrity 9 (2018) 47–54 Author name / Structural Integrity Procedia 00 (2018) 000–000

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The DIC measurements were performed by using an Aramis a non-contact and material-independent measuring system based on digital image correlation. The image analysis was performed using Correla software’s, developed by PEM team of Pprim Institut of Poitiers. The estimating uncertainty of displacement is about 0.026 pixels. The optical measurement configuration is illustrated in Fig. 2.

Fig. 2. Optical metrology setup

2.4. Experimental procedure During the test the force versus deflection was measured by means of LVDT position sensor (-/+ 0.01mm) and a load cell of 5 kN (-/+ 5%). In addition with the measurement devices of testing machine, the sample deformation was performed from the measurements by Digital Image Correlation. These measurements allow determining displacement and strain fields.

a. SENB

b. CS

Fig. 3. Fracture toughness test specimens: (a) Single Edge Notch Bend; (b) Compact Shear

Mode I fracture toughness tests . Mode I fracture toughness tests were carried out on Single Edge Notched Bend (SENB) specimens, Fig. 3.a loaded in three point bending.using Zwick Roell Z005 at room temperature under